I had the pleasure of Training on the same seminar last year, was mind boggling, very impressive and both instructors have a deep understanding of the martial art. I am already signed up for this year's seminar and really looking forward to it..

p.s. the attendees last year were from different martial arts and not all Aikido, some Judoka, some Jyujitsu and some from karate.
Well worth it what ever your martial art, they can help you improve your martial art by understanding principles.. really impressive stuff.